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    kweston780's Avatar
    kweston780 Posts: 1, Reputation: 1
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    #1

    Jan 8, 2010, 07:57 PM
    American standard furnace thermostat wiring
    Ijust purchased a new furnace, an American standard with Intell Ignition control (50A65-476). I am only using it as a furnace, no heat pump or air. The old furnace used a two wire thermostat. The new control has twin-Y-W-R-G-C. Which do I need and which if any need to be jumped to use the furnace.
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #2

    Jan 8, 2010, 08:19 PM

    You will use the R and the W terminals on the thermostat.

    The only jumper you might need is if you have a Rc and Rh terminal you might connect them if they are not already jumpered. You should not have to do that since you are not using AC.
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